Marine animals, such as the extremely simple flatworm Trichoplax, are ideal model organisms for studying the early ...

For humans, feces are last on the list of things we’d place near our mouth. In the animal world, that reaction does not always apply. Coprophagy is the act of eating feces, and for many species it ...

Defecation is commonly treated as a universal feature of animal life, a visible outcome of digestion and metabolic turnover. In biological terms, however, waste handling takes multiple forms, shaped ...